ISO TC 21/SC 3 Reference number ISO 7240 3 2010(E) © ISO 2010 INTERNATIONAL STANDARD ISO 7240 3 First edition 2010 12 15 Fire detection and alarm systems — Part 3 Audible alarm devices Systèmes de dét[.]
INTERNATIONAL STANDARD ISO 7240-3 First edition 2010-12-15 Fire detection and alarm systems — Part 3: Audible alarm devices Systèmes de détection et d'alarme d'incendie — Partie 3: Dispositifs d'alarme sonores `,,```,,,,````-`-`,,`,,`,`,,` - Reference number ISO 7240-3:2010(E) Copyright International Organization for Standardization Provided by IHS under license with ISO No reproduction or networking permitted without license from IHS © ISO 2010 Not for Resale ISO 7240-3:2010(E) PDF disclaimer This PDF file may contain embedded typefaces In accordance with Adobe's licensing policy, this file may be printed or viewed but shall not be edited unless the typefaces which are embedded are licensed to and installed on the computer performing the editing In downloading this file, parties accept therein the responsibility of not infringing Adobe's licensing policy The ISO Central Secretariat accepts no liability in this area Adobe is a trademark of Adobe Systems Incorporated Details of the 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Provided by IHS under license with ISO No reproduction or networking permitted without license from IHS © ISO 2010 – All rights reserved Not for Resale ISO 7240-3:2010(E) Contents Page Foreword iv Scope Normative references 3.1 3.2 Terms, definitions and abbreviated terms Terms and definitions Abbreviated terms 4.1 4.2 4.3 4.4 4.5 4.6 4.7 4.8 4.9 4.10 Requirements .3 Compliance Sound pressure level Frequency and sound pattern Audible alarm devices (a.a.d.s) with voice Synchronization — Optional function Construction On-site adjustment of the mode of operation Durability Marking and data Requirements for software-controlled a.a.d.s 5.1 5.2 5.3 5.4 5.5 5.6 5.7 5.8 5.9 5.10 5.11 5.12 5.13 5.14 5.15 5.16 5.17 5.18 5.19 5.20 Tests .8 General Reproducibility 11 Operational performance 11 Durability 12 Dry heat (operational) 12 Dry heat (endurance) 13 Cold (operational) 14 Damp heat, cyclic (operational) 15 Damp heat, steady state (endurance) 16 Damp heat, cyclic (endurance) 16 Sulfur dioxide (SO2) corrosion (endurance) .17 Shock (operational) .18 Impact (operational) 19 Vibration, sinusoidal (operational) 20 Vibration, sinusoidal (endurance) .21 Electromagnetic compatibility (EMC), immunity (operational) .21 Enclosure protection 23 Operational performance for a.a.d.s with voice .24 Sequence timing for a.a.d.s with voice .24 Synchronization (optional) 25 Test report 26 Annex A (normative) Sound pressure level test for a.a.d 28 Annex B (normative) Comparative sound pressure level test during environmental conditioning 32 Annex C (informative) Comparison of flammability test requirements in various standards 37 Bibliography 39 © ISO for 2010 – All rights reserved Copyright International Organization Standardization Provided by IHS under license with ISO No reproduction or networking permitted without license from IHS iii Not for Resale `,,```,,,,````-`-`,,`,,`,`,,` - Introduction vi ISO 7240-3:2010(E) Foreword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies) The work of preparing International Standards is normally carried out through ISO technical committees Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part The main task of technical committees is to prepare International Standards Draft International Standards adopted by the technical committees are circulated to the member bodies for voting Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights ISO shall not be held responsible for identifying any or all such patent rights ISO 7240-3 was prepared by Technical Committee ISO/TC 21, Equipment for fire protection and fire fighting, Subcommittee SC 3, Fire detection and alarm systems ISO 7240 consists of the following parts, under the general title Fire detection and alarm systems: ⎯ Part 1: General and definitions ⎯ Part 2: Control and indicating equipment ⎯ Part 3: Audible alarm devices ⎯ Part 4: Power supply equipment ⎯ Part 5: Point-type heat detectors ⎯ Part 6: Carbon monoxide fire detectors using electro-chemical cells ⎯ Part 8: Carbon monoxide fire detectors using an electro-chemical cell in combination with a heat sensor ⎯ Part 9: Test fires for fire detectors (Technical Specification) ⎯ Part 10: Point-type flame detectors ⎯ Part 11: Manual call points ⎯ Part 12: Line type smoke detectors using a transmitted optical beam ⎯ Part 13: Compatibility assessment of system components ⎯ Part 14: Guidelines for drafting codes of practice for design, installation and use of fire detection and fire alarm systems in and around buildings (Technical Report) iv Copyright International Organization for Standardization Provided by IHS under license with ISO No reproduction or networking permitted without license from IHS © ISO 2010 – All rights reserved Not for Resale `,,```,,,,````-`-`,,`,,`,`,,` - ⎯ Part 7: Point-type smoke detectors using scattered light, transmitted light or ionization ISO 7240-3:2010(E) ⎯ Part 15: Point type fire detectors using scattered light, transmitted light or ionization sensors in combination with a heat sensor ⎯ Part 16: Sound system control and indicating equipment ⎯ Part 17: Short-circuit isolators ⎯ Part 18: Input/output devices ⎯ Part 19: Design, installation, commissioning and service of sound systems for emergency purposes ⎯ Part 20: Aspirating smoke detectors ⎯ Part 21: Routing equipment ⎯ Part 22: Smoke-detection equipment for ducts ⎯ Part 23: Visual alarm devices 1) ⎯ Part 24: Sound-system loudspeakers ⎯ Part 25: Components using radio transmission paths ⎯ Part 27: Point-type fire detectors using a scattered-light, transmitted-light or ionization smoke sensor, an electrochemical-cell carbon-monoxide sensor and a heat sensor ⎯ Part 28: Fire protection control equipment 1) To be published `,,```,,,,````-`-`,,`,,`,`,,` - © ISO for 2010 – All rights reserved Copyright International Organization Standardization Provided by IHS under license with ISO No reproduction or networking permitted without license from IHS v Not for Resale ISO 7240-3:2010(E) Introduction In a fire detection and alarm system, the purpose of the audible alarm devices is to warn person(s) within, or in the vicinity of, a building of the occurrence of a fire emergency situation in order to enable such a person(s) to take appropriate measures Audible alarm devices using voice messages are also for warning the occupants of a building of the occurrence of a fire risk These use a combination of an attention-drawing signal and dedicated voice message(s) Additional requirements, test methods and performance criteria specific to audible alarm devices with voice are also incorporated in this International Standard Attention is drawn to ISO 8201, which specifies the temporal pattern and the required sound pressure level of an audible emergency evacuation signal This part of ISO 7240 recognizes that the exact nature of the sound requirements, i.e its frequency range, temporal pattern and output level, will vary according to the nature of the installation, the type of risk present and appropriate measures to be taken, the type of signals used by other non-emergency alarms (see for example ISO 7731) and national differences in custom and practice The resulting standard specifies, therefore, a common method for testing of the operational performance of audible alarm devices against the specification declared by the manufacturer, rather than imposing common requirements `,,```,,,,````-`-`,,`,,`,`,,` - This part of ISO 7240 gives common requirements for the construction and robustness of audible alarm devices, as well as for their performance under climatic, mechanical and electrical interference conditions which are likely to occur in the service environment Audible alarm devices have been classified in either an indoor or an outdoor application environment category vi Copyright International Organization for Standardization Provided by IHS under license with ISO No reproduction or networking permitted without license from IHS © ISO 2010 – All rights reserved Not for Resale INTERNATIONAL STANDARD ISO 7240-3:2010(E) Fire detection and alarm systems — Part 3: Audible alarm devices Scope `,,```,,,,````-`-`,,`,,`,`,,` - This part of ISO 7240 specifies the requirements, test methods and performance criteria for audible alarm devices intended to signal an audible warning of fire between a detection and alarm system and the occupants of a building It is intended to cover only those devices which derive their operating power by means of a physical electrical connection to an external source such as a fire alarm system This part of ISO 7240 is also intended to cover audible alarm devices capable of giving voice messages by the application of specific requirements, tests and performance criteria This part of ISO 7240 specifies fire alarm audible alarm devices for two types of application environment, type A for indoor use and type B for outdoor use This part of ISO 7240 is not intended to cover: a) loudspeaker-type devices primarily intended for emitting emergency voice messages that are generated from an external audio source; b) supervisory audible alarm devices, e.g within the control and indicating equipment Normative references The following referenced documents are indispensable for the application of this document For dated references, only the edition cited applies For undated references, the latest edition of the referenced document (including any amendments) applies ISO 7240-1, Fire detection and alarm systems — Part 1: General and definitions ISO 8201, Acoustics — Audible emergency evacuation signal IEC 60068-1:1988/Corr 1:1988/A1:1992, Environmental testing — Part 1: General and guidance IEC 60068-2-1:2007, Environmental testing — Part 2-1: Tests — Test A: Cold IEC 60068-2-2:2007, Environmental testing — Part 2-2: Tests — Test B: Dry heat IEC 60068-2-6:2007, Environmental testing — Part 2-6: Tests — Test Fc: Vibration (sinusoidal) IEC 60068-2-27:2008, Environmental testing — Part 2-27: Tests — Test Ea and guidance: Shock IEC 60068-2-30:2005, Environmental testing — Part 2-30: Tests — Test Db: Damp heat, cyclic (12 h + 12 h cycle) © ISO for 2010 – All rights reserved Copyright International Organization Standardization Provided by IHS under license with ISO No reproduction or networking permitted without license from IHS Not for Resale ISO 7240-3:2010(E) IEC 60068-2-42:2003, Environmental testing — Part 2-42: Tests — Test Kc: Sulphur dioxide test for contacts and connections IEC 60068-2-75:1997, Environmental testing — Part 2-75: Tests — Test Eh: Hammer tests IEC 60068-2-78:2001, Environmental testing — Part 2-78: Tests — Test Cab: Damp heat, steady state IEC 60529:2001/Corr 1:2003/Corr 2:2007, Degrees of protection provided by enclosures (IP code) IEC 60695-11-10:2003, Fire hazard testing — Part 11-10: Test flames — 50 W horizontal and vertical flame test methods IEC 60695-11-20:2003, Fire hazard testing — Part 11-20: Test flames — 500 W flame test methods IEC 61672-1:2002, Electroacoustics — Sound level meters — Part 1: Specifications EN 50130-4:1995/A1:1998/A2:2003, Alarm systems — Part 4: Electromagnetic compatibility — Product family standard: Immunity requirements for components of fire, intruder and social alarm systems Terms, definitions and abbreviated terms For the purposes of this document, the terms, definitions and abbreviated terms given in ISO 7240-1 and the following apply 3.1 Terms and definitions 3.1.1 A-weighted sound pressure level sound pressure, which is 20 times the logarithm to base ten of the ratio of the A-weighted sound pressure to the reference pressure of 20 μPa at kHz NOTE The A-weighting characteristics are given in IEC 61672-1 3.1.2 audible alarm device a.a.d device intended to signal an audible warning of fire between a fire detection and alarm system and the occupants of a building NOTE Audible alarm devices are sometimes referred to as “fire alarm sounders” 3.1.3 mode (of operation) one of a possible number of predefined sounds of the audible alarm device which can be selected by means specified by the manufacturer Sound patterns, sound pressure levels 3.1.4 reference point point representing the origin of the sound within or on the surface of the audible alarm device as specified by the manufacturer NOTE The reference point is used in Annex A Copyright International Organization for Standardization Provided by IHS under license with ISO No reproduction or networking permitted without license from IHS © ISO 2010 – All rights reserved Not for Resale `,,```,,,,````-`-`,,`,,`,`,,` - EXAMPLE ISO 7240-3:2010(E) 3.1.5 sound pattern predefined acoustic alarm signal NOTE Sound pattern is also often referred to as “tone” 3.1.6 supervisory sounder audible device on a piece of equipment used for drawing attention to a change of status NOTE Supervisory sounders are often mounted within the fire detection and fire alarm control and indicating equipment 3.1.7 type A a.a.d device primarily intended for indoor applications NOTE Type A a.a.d may be suitable for some protected outdoor situations 3.1.8 type B a.a.d device primarily intended for outdoor applications NOTE Type B a.a.d may be more suitable than type A a.a.d for some indoor situations where high temperature or humidity or both are present 3.1.9 volume control means for adjusting sound pressure level `,,```,,,,````-`-`,,`,,`,`,,` - 3.2 Abbreviated terms a.a.d audible alarm device AC alternating current DC direct current RMS root mean square Requirements 4.1 Compliance In order to comply with this part of ISO 7240, an a.a.d shall meet the requirements of this clause which shall be verified by visual inspection or engineering assessment, shall be tested as described in Clause and shall meet the requirements of the tests 4.2 Sound pressure level This part of ISO 7240 requires that the manufacturer declare sound pressure levels in the data required by 4.9.2 The manufacturer may declare different sound pressure levels for operation under different conditions, e.g when operating on different voltage ranges or with different sound patterns If this is the case, the sound pressure level of each specimen shall be measured under each mode of operation (see 5.3) When tested in accordance with 5.3, the a.a.d shall produce A-weighted sound pressure levels of not less than 65 dB in one direction at a distance of m NOTE A maximum sound pressure level received by occupants can be specified by national regulations © ISO for 2010 – All rights reserved Copyright International Organization Standardization Provided by IHS under license with ISO No reproduction or networking permitted without license from IHS Not for Resale ISO 7240-3:2010(E) 4.3 Frequency and sound pattern This part of ISO 7240 covers a.a.d.s which produce different frequencies and sound patterns and, therefore, does not specify a minimum and maximum frequency or specific sound pattern However, the main sound frequency(ies), frequency range(s) and sound pattern(s) shall be declared in the data required in 4.9.2 NOTE The sound patterns and frequencies required can vary in different countries Reference needs to be made to local regulations ISO 8201 specifies a standard international evacuation signal 4.4 Audible alarm devices (a.a.d.s) with voice 4.4.1 A.a.d.s using voice messages shall be capable of producing an audible warning signal and a voice message or messages 4.4.2 Representative messages related to fire safety shall be declared by the manufacturer and shall be considered by the testing authority The message determined to be worst case shall be subject to conformance assessment When selecting the worst-case message, message length, loudness and repetition timing should be considered 4.4.3 For messages that require immediate action, the warning signal and message sequence broadcast by the device shall be within the following limits: a) warning signal, lasting for s to 10 s; followed by b) silence, lasting for 0,25 s to s; followed by c) voice message; followed by d) silence, lasting for 0,25 s to s The time for each cycle shall not exceed 30 s The periods of silence may need to be longer than indicated in certain circumstances, for example in spaces with long reverberation times, but shall not be such that the time between the start of each cycle exceeds 30 s For other messages, it is permitted to extend either or both the silence period after the voice message and the period within which the message is repeated 4.4.4 Access to the message recording function shall be restricted as specified in 4.6.4 Persons trained in the proper use of microphones should be used to recording the messages The recordings should be made in a room with a controlled acoustic environment having an ambient A-weighted noise level not greater than 30 dB and a reverberation time not greater than 0,5 s from 150 Hz to 10 kHz 4.5 Synchronization — Optional function To prevent acoustic interaction of a.a.d.s installed in close proximity, a.a.d.s shall have provision for synchronizing warning signals and messages with that of other devices Synchronization shall meet the requirements of 5.20.4 Power interruption used for synchronization purposes shall not adversely affect the warning signal or the voice message `,,```,,,,````-`-`,,`,,`,`,,` - NOTE Synchronization can be achieved by internal circuitry, the addition of a trigger wire connected between devices or by other means as defined by the manufacturer Copyright International Organization for Standardization Provided by IHS under license with ISO No reproduction or networking permitted without license from IHS © ISO 2010 – All rights reserved Not for Resale